Pulsed electrohydrodynamic jetting for "Drop-and-place" particle manipulation

Chuan Hua Chen, Dudley A. Saville, Ilhan A. Aksay

Research output: Contribution to conferencePaperpeer-review


Drop-and-place aims at delivering the building blocks of microstructures using colloidal droplets as carrying medium; this approach combines the merits of pick-and-place and self-assembly. Among contemporary techniques used for drop generation, pulsed electrohydrodynamic (EHD) jetting is the only one which can produce on-demand drops with dimensions at least one-order-of-magnitude smaller than the nozzle. Here, we report an experimentally validated model for externally pulsed EHD jetting, and the application of this model in the drop-and-place of an array of colloidal particles. We show that the flow rate is limited by viscous drag in a thin nozzle, which leads to intrinsic pulsations of the conejet. We demonstrate that millimeter-scale nozzles can be utilized to achieve micron-scale positioning accuracy and single-particle dosing accuracy.

Original languageEnglish (US)
Number of pages1
StatePublished - 2005
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: Oct 30 2005Nov 4 2005


Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
Country/TerritoryUnited States
CityCincinnati, OH

All Science Journal Classification (ASJC) codes

  • General Engineering


Dive into the research topics of 'Pulsed electrohydrodynamic jetting for "Drop-and-place" particle manipulation'. Together they form a unique fingerprint.

Cite this